The road was a magnificent one, having been built on the foundations of the ancient Appian Way. It was lined on each side with trees, and was broad and well paved. It is considered one of the finest in Europe. Along this they rolled, the blue sky above them, on the right hand the mountains, on the left the sea. The air was damp and chill; but at first they did not feel it particularly, though Uncle Moses complained of "rheumatics," and took precautionary measures against his insidious enemy by wrapping himself up warmly. As they went on they saw crowds of peasants coming to work in the fields. These peasants lived in the hill country on the right, and had to walk a great distance to get to their place of labor,—for to live on the marshes was impossible. Men, women, and even children were there; and their pale, sickly faces and haggard looks showed how deadly were the effects of the noxious exhalations from this marshy soil.

At about midday they reached an inn, which stood about half way over the marshes, by the road-side. David speculated much as to whether this place might or might not be the Forum Appii mentioned in the book of Acts as a stopping-place of St. Paul on his way to Rome; but the others were too hungry to take any interest whatever in the question. They remained here nearly two hours, got something to eat, and then resumed their journey.

CHAPTER XXI.

The Pontine Marshes.—A Change comes over the Party.—The foul Exhalations.—The Sleep of Death.—Dreadful Accident.—Despair of Frank.—A Break-down.—Ingenuity of the Driver.—Resumption of the Journey.

For the first half of the day the boys had been in great spirits. Laughter, noisy conversation, jests, chaff, and uproarious songs had all been intermingled, and the carriage was a miniature Bedlam. But after their stoppage at the wayside inn a change took place, and on resuming their journey, they seemed like a very different company. The air of the marshes now began to act upon them. They felt it to be raw, and chill, and unpleasant. A general feeling of discomfort and a general sensation of gloom pervaded all of them. Bob held out most bravely, and strove to regain the jollity which they had felt before. For a long time his fun and nonsense provoked a laugh; but at length his fun grew fainter, and his nonsense more stupid; and the laughter grew less hearty and more forced, until at length the fun, and the nonsense, and the laughter ceased altogether.

Frank felt upon himself the responsibility of the rest to an unusual degree. He was only a few weeks older than David, but he was far stronger and more mature in many respects. David was a hard student, and perhaps a bit of a book-worm, and had a larger share of the knowledge that may be gained from books; but Frank had seen more of the world, and in all that relates to the practical affairs of common life he was immeasurably superior to David. For this reason Frank often assumed, and very naturally too, the guardianship of the party; and so appropriate was this to him, that the rest tacitly allowed it. As for Uncle Moses, none of them ever regarded him as their protector, but rather as an innocent and simple-hearted being, who himself required protection from them.

Frank, therefore, on this occasion, kept warning the whole party, above all things, not to let themselves go to sleep. He had heard that the air of the Pontine Marshes had a peculiar tendency to send one to sleep; and if one should yield to this, the consequences might be fatal. Fever, he, said, would be sure to follow sleep, that might be indulged in under such circumstances. The anxiety which was created in his own mind by his sense of responsibility was of itself sufficient to keep him awake, and left him to devote all his energies to the task of trying to keep the others awake also, and thus save them from the impending danger.

At first they, all laughed at him; but after a time, as each one felt the drowsiness coming over him, they ceased to laugh. Then they tried to sing. They kept up this for some time. They exhausted all their stock of school songs, nigger songs, patriotic songs, songs sentimental and moral, and finally tried even hymns. But the singing was not a very striking success; there was a lack of spirit in it; and under this depressing sense of languor, the voice of music at last died out.

Singularly enough, the one who felt this drowsiness most strongly was Bob. Frank had not thought of him as being at all likely to fall asleep; but whether it was that his mobile temperament made him more liable to extremes of excitement and dullness, or whether the reaction from his former joviality and noisiness had been greater than that of the rest, certain it is that Bob it was who first showed signs of sleep. His eyes closed, his head nodded, and lifting it again with a start, he blinked around.

"Come, Bob," said Frank, "this won't do. You don't mean to say that you're sleepy."